<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title></title>
    </head>
    <body>
        <form method="get" name="ex_dois" action="arquivo_dois.php">
            <input type="text" name="valor">
            <input type="submit" value="Enviar">
        </form>
    </body>
</html>
